Improvement in nut-locks



Nut-Lock.

Patented July 27,1875.

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ATTO R N EY S NPETERS, PHOTD LITHOGRAPHEI WASHINGTON D c UNITED STATESPATENT QFFIGE.

JAMES M. KENT, OF CURTIS, NEW YORK.

IMPROVEMENT IN NUT-LOCKS.

Specification forming part of Letters Patent No. 166,113, dated July 27,1875; application filed June 19, 1875.

To all whom it may concern:

Be it known that I, JAMES M. KENT, of Curtis, in the county of Steubenand State of New York, have invented a new and valuable Improvement inLock-Nuts; and I do hereby declare that the following is a full, clear,and exact description of the construction and operation of the same,reference being had to the annexed drawings, making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawing is a representation of a side elevation of mylock-nut; and Figs. 2, 3, 4, and 5 are detail views of the same.

My invention relates to nut-locks; and consists in the novelconstruction and arrangement of a serrated ring, adapted for engagementwith like serrations on a nut, as hereinafter described, and removableonly by cutting, as is also hereinafter fully set forth.

A of the drawings represents a bolt, upon which is formed, in the usualmanner,'both right and left threads, as shown on Fig. l. B represents anut, upon one side of which is formed teeth or serrations, marked a. 0represents a ring, having teeth or serrations adapted to engage with theteeth a in the manner shown on Fig. 1; and c is an elastic washer,arranged upon the bolt between the ring 0 and the grooved nut, nextmentioned. D represents a nut adapted to work upon the bolt A by meansof an ordinary wrench, and when on duty is pressed closely againstthewasher 0, thereby holding the ring 0 and the nut B closely together.Upon two sides of this nut B I form grooves, marked 1, which are fullyillustrated 011 Fig. 2 of the drawings. The object of these grooves isto provide means of access to each side of the ring 0, and, by means ofa cold-chisel, out the same in two pieces, when desirable.

It is obvious that when the ring 0 is pressed closely against the nut B,the form of the boltthrcads will keep it rigidly in position, andhence'removal or disengagement is impossible, (or nearly so, except bythe destruction of the ring. This is readily accomplished by seven ingsaid ring in the manner above mentioned.

The manner of connecting ring 0 with nut D is illustrated in Fig. 4. Itconsists in forming upon the side of said nut a quadrangular projection,marked G, adapted to receive the ring, the center of which is likewisequadrangular, and of a size adapted to said projection.

What I claim as new,and desire to secure by Letters Patent, is-

The nut lock described, having doublethreaded bolt A, ring 0, washer c,and nuts B and D, the latter of which is provided with grooves 3 for thepurpose specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JAMES M. KENT.

Witnesses:

CHARLES KELLOG, J. L. TINKER.

